The book unfolds in three parts, beginning with an introduction to liminal spaces, sacred geography, and altered states, then explores examples of purported gateways across cultures, including ancient Egyptian temple complexes and Himalayan pilgrimage routes. Finally, it critically evaluates evidence for and against physical gateways, considering psychological, cultural, and neurological explanations.
While empirical evidence for physical gateways remains unsubstantiated, the book emphasizes the real and powerful nature of human transcendence and spiritual seeking, offering a balanced perspective suitable for those interested in spirituality and religion.